Alloy



UNITED STATES FREDERIC E. CARTER, OF NEWARK, NEW JERSEY, ASSIGNOR TO BAKER & COMPANY,

PATENT OFFICE.

1 INC., A CORPORATION OF NEW JERSEY.

ALLOY.

No Drawing.

To all evil am it may concern Be it known that I, FREnERIo EnwAnn CAR- 'rnn, a subject of Great Britain, and a resident of Newark, in the county ofEssex and State of New Jersey, have invented new and ncto contactsand the like, and the objects oi the invention are to avoid the use of iridium, which is expensive and dithcult to obtain; to obtain an alloy whlch shall closely simulate platiuuni-iridium in all the qualities which render it especially adapted to the uses for which it is employed; to obtain a practicable facility in working the alloy, and to obtain other ad\-*antages and results as may be brought out in the following description.

lu carrying out my invention I form an alloy of gold and palladium with an excess of platinum, by fusing or melting them toi. gether and the proportions of such metals which I use are substantially el /0 of palladium and 5%-15% of gold, the rest of Specification of Letters Patent. a Patented May 24, 1921';

Application filed July 17, 1920. Serial No. 396,930.

workable. I have discovered that the ad-' dition of a small quantity ofpalladium will avoid this difliculty and produce a workable alloy even if considerable more gold than 9% is employed. The gold secures hardness in my new alloy, while the palladium avoids brittleness and makes the alloy workable, and it will be undeistood from this that the proportions of the metals can be varied to adapt the alloy to different purposes or uses, Without departing from the spirit and scope of theinvention, and I do not wish to be understood-as restricting myself except as the state of the art may re ui're.

. aving thus described my invention, what I claim is:

An alloy containing substantially %%-5% palladium, 5% 15% gold and the rest platinum.

' FREDERIO E. CARTER. 

